Modification of Weak Localization in Metallic Thin Films Due to the Adsorption of Chiral Molecules

Meital Ozeri; Jiahui Xu; Gilad Bauer; Linde A.B. Olde Olthof; Graham Kimbell; Angela Wittmann; Shira Yochelis; Jonas Fransson; Jason W.A. Robinson; Yossi Paltiel; Oded Millo

doi:10.1021/acs.jpclett.3c00702

Modification of Weak Localization in Metallic Thin Films Due to the Adsorption of Chiral Molecules

Meital Ozeri, Jiahui Xu, Gilad Bauer, Linde A.B. Olde Olthof, Graham Kimbell, Angela Wittmann, Shira Yochelis, Jonas Fransson^*, Jason W.A. Robinson^*, Yossi Paltiel^*, Oded Millo^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We perform low-temperature magneto-conductance measurements on Cu and Au thin films with adsorbed chiral molecules and investigate their phase-coherent transport properties. Upon adsorption of chiral molecules, the spin-orbit coupling strength in Cu decreases and the Au films become ferromagnetic as evident from weak localization and antilocalization data. A theoretical model indicates that anisotropy in the molecular tilt angles, provided that the chiral molecules act as magnetic moments, induces a nonvanishing magnetic exchange interaction, causing changes in the spin-orbit coupling strength in Cu and Au. Our work adds a new viewpoint to the plethora of unique phenomena emerging from chiral molecule adsorption on materials.

Original language	English
Pages (from-to)	4941-4948
Number of pages	8
Journal	Journal of Physical Chemistry Letters
Volume	14
Issue number	21
DOIs	https://doi.org/10.1021/acs.jpclett.3c00702
State	Published - 1 Jun 2023

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© 2023 The Authors. Published by American Chemical Society.

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title = "Modification of Weak Localization in Metallic Thin Films Due to the Adsorption of Chiral Molecules",

abstract = "We perform low-temperature magneto-conductance measurements on Cu and Au thin films with adsorbed chiral molecules and investigate their phase-coherent transport properties. Upon adsorption of chiral molecules, the spin-orbit coupling strength in Cu decreases and the Au films become ferromagnetic as evident from weak localization and antilocalization data. A theoretical model indicates that anisotropy in the molecular tilt angles, provided that the chiral molecules act as magnetic moments, induces a nonvanishing magnetic exchange interaction, causing changes in the spin-orbit coupling strength in Cu and Au. Our work adds a new viewpoint to the plethora of unique phenomena emerging from chiral molecule adsorption on materials.",

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doi = "10.1021/acs.jpclett.3c00702",

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AU - Ozeri, Meital

AU - Xu, Jiahui

AU - Bauer, Gilad

AU - Olde Olthof, Linde A.B.

AU - Kimbell, Graham

AU - Wittmann, Angela

AU - Yochelis, Shira

AU - Fransson, Jonas

AU - Robinson, Jason W.A.

AU - Paltiel, Yossi

AU - Millo, Oded

PY - 2023/6/1

Y1 - 2023/6/1

N2 - We perform low-temperature magneto-conductance measurements on Cu and Au thin films with adsorbed chiral molecules and investigate their phase-coherent transport properties. Upon adsorption of chiral molecules, the spin-orbit coupling strength in Cu decreases and the Au films become ferromagnetic as evident from weak localization and antilocalization data. A theoretical model indicates that anisotropy in the molecular tilt angles, provided that the chiral molecules act as magnetic moments, induces a nonvanishing magnetic exchange interaction, causing changes in the spin-orbit coupling strength in Cu and Au. Our work adds a new viewpoint to the plethora of unique phenomena emerging from chiral molecule adsorption on materials.

AB - We perform low-temperature magneto-conductance measurements on Cu and Au thin films with adsorbed chiral molecules and investigate their phase-coherent transport properties. Upon adsorption of chiral molecules, the spin-orbit coupling strength in Cu decreases and the Au films become ferromagnetic as evident from weak localization and antilocalization data. A theoretical model indicates that anisotropy in the molecular tilt angles, provided that the chiral molecules act as magnetic moments, induces a nonvanishing magnetic exchange interaction, causing changes in the spin-orbit coupling strength in Cu and Au. Our work adds a new viewpoint to the plethora of unique phenomena emerging from chiral molecule adsorption on materials.

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Modification of Weak Localization in Metallic Thin Films Due to the Adsorption of Chiral Molecules

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